Leo ehrlich



(No Model.)

L. EHRLICH.

APBR GUTTER.

No. 394,063. Patented Deo. 4, 1888-..

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UNITED STATES PATENT OFFICE.

LEO EHRLICI'I, OF ST. LOUIS, MISSOIIRI, ASSIGNOR TO THE AIERICAI ROLL PAPER COMPANY, OE SAME PLACE.

PAPER-CUTTER.

SPECIFICATION forming part of Letters Patent No. 394,063, dated December 4, 1888.

Application led December 20, 1887. Serial No. 258,503. (No model.)

To all whom it may concern:

Be it known that I, LEO EHRL'IcI-I, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful .Improve ment in Paper-Cutters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, and in which- FigureI is a front elevation of my improved paper-cutter. Fig. II is an end view. Eig. III is an enlarged detail view of one of the arms upon which the roller rests.

My invention relates to a paper-cutter in which a stationary knife is used and in which the roller moves toward the knife as the paper is' taken off; and my invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Referring to the drawings, l represents a suitable base, and 2 end pieces, which form the support for the roller.

Si represents the roller upon which the paper l is wound or placed, and which is provided with arbors or pins 5, which rest upon Iarms (i, formed upon or secured to the end pieces, L and projecting in a substantially horizontal position therefrom. The upper faces of these arms are inclined, and this inclination increases or is Igreater at the outer ends of the arms than at their inner portions. As the pap-er is removed the roller moves outward on these arms, owing to the inclination, and the inclination is made steeper or given a greater pitch at the outer portions of the arms, so that as the weight of the roller de vcreases its pressure against the knife will not correspondingly decrease, but will remain the same. For example, when the roller is first put on, it occupies about the position shown in full lines in Eig. II, the arbors or pins 5 bearing upon the inner portions of the arms, where the `inclination is not great. The roller is heavy now, and this inclination causes it to press against the knife with just sufficient force, and no more. As the paper is removed, the roller gradually pproaches the position shown bydotted line 7, and quite a port-ion of the paper having been removed the pressure of it upon the knife would not be so great were the inclination upon the upper face of the arms the same. To avoid this lack of pressure the arms are given the gradual increase in inclination, so that as the roller moves from the position shown by dotted line 7 to t-he dotted line 8 the pins or arbors 5 travel over a still steeper inclination, and this inclination correspondingly increases as `the roller moves from the dotted line 8 to the dotted line t), and from the latter to the dot-ted 6o line l0, where the inclination is quite acute. By a systematic inclination of the arms or the upper faces of the arms in this manner the roller is made to bear against the knife with a uniform pressure from the time it is first put on until the paper is entirely removed, which adds very much to the ease and perfect working of the device.

To prevent the roller from beingl accidentally thrown from its support while in use, I 7o place guardl'ails ll about the arbors and running in line with the arms, as shown. The inner ends of these rails are bent outward at l2 (see Fig. I) to permit the passage of the pins or arbors 5 in putting the roller in place 75 and removing it.

ll represents the knife, which is suitably secured to the arms t3. I have shown it fastened to the arms by means of a headed pin, l5, and a screw, lt. The knife has an en- 8o largement, 1T, to receive the head of the pin l5, and it is then slipped endwise to cause the pin l5 to enter a longitudinal slot, IS, in the knife. The other end of the knife is provided with a longitin'linal slot, It), to receive the 85 screw lli. The knife can thus be quickly applied and removed, and by having it removable and having knives of different lengths the ends 2 may be placed farther apart and nearer together to accommodate themselves 9o to rollers of different lengths.

I claim as my inventionl. In a paper-cutter, the arms having variated inclinations, in combination with a roller and knife, substantially as and for the purpose set forth.

2. In a paper-cutter, the end pieces provided with arms having variated inclinations at their upper faces, in combination with a knife, anda roller having pins or arbors adaptroo ed to bear upon the arms, substantially as and for lthe purpose set forth.

In a paper-cutter, the combination of the end pieces provided with arms havingvariated inclinations 011 their upperfaces, in combination with the roller and guard-rails, substantially as and for the purpose set forth.

4. ln a paper-cutter, the end pieces having substantially horizontal arms inclined on their upper faces, in combination with a roller supported on said arms and a knife secured to said arms, substantiall)v as and for the purpose set forth.

5. In a paper-cutter, the combination of the end pieces provided with arms, knife secured to the outer ends of the arms, guard-rails having bends l2 and located above and in line with the arms, and roller having pins or arbors bearing on the arms, substantially as and for the purpose set forth.

6. In a paper-cutter, in combination with a knife and a roller, inclined ways upon which said roller is supported, the inclinations of said ways being varia-ted, for the purpose set forth. y

7. In a paper-cutter, the combination, with the roller and the supports therefor, of the pinA l5, secured to one support, an d the screw 16, secured to the other support, the knife let, formed with an orifice, l, and a longitudinal slot leading thereto at one end for securing the knife to the pin, and a longitudinal opening, lf), at the other end for receiving` the screw, substantially as described.

LEOv EHRLICH.

ln presence ol- GEO. H. KNIGHT, Jos. WAHLE, 

